Title :
Model testing of an improved oil dielectric for high pressure oil-filled cable terminations
Author :
Engelhardt, J. ; Floberg, M. ; Gear, R. ; Orifice, D.
Author_Institution :
Underground Syst. Inc., Armonk, NY, USA
fDate :
7/1/1990 12:00:00 AM
Abstract :
A model study is presented of high-pressure, oil-filled termination failure due to the sudden loss of oil pressure on the energized line. Nitrogen saturated oil was found to have a very low internal breakdown strength under vacuum. Injecting sulfur hexafluoride (SF6) gas into the oil at low pressures prevented internal breakdown of the oil under vacuum. The study indicates that injecting SF 6 will help solve the termination failure problem
Keywords :
cable insulation; electric breakdown of liquids; electric connectors; insulating oils; insulation testing; power cables; SF6; failure; high pressure oil-filled cable terminations; insulation testing; internal breakdown strength; model; oil dielectric; power cables; Dielectric breakdown; Flashover; Gears; Laboratories; Nitrogen; Oil filled cables; Petroleum; Sulfur hexafluoride; Testing; Vacuum breakdown;
Journal_Title :
Power Delivery, IEEE Transactions on
